Japanese idol group HKT48 will release their 12th single "Ishi" next week, the single's type B coupling track "Otona Ressha wa Doko wo Hashitteru no ka" is available on YouTube.
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Otona Ressha MV (Short ver.)
Note: Otona Ressha is a coupling track from AKB48's 39th single "Green Flash", by HKT48 Senbatsu.